EN 5 Free Cutting Steel
We are EN 5 Free Cutting Steel Manufacturers, Suppliers, and Exporters in Mumbai, India. STEEL MART is an ISO 9001:2015 certified company established in 1986, with decades of experience in supplying high-quality engineering steel products to various industries. We specialize in manufacturing and supplying EN 5 Medium Carbon Steels (BS 970 080M30 / EN5 / DIN C30 / W.Nr 1.0528 / AISI 1030 / SAE 1030 / JIS S30C) that meet national and international quality standards for medium-strength turned shafts, drive axles, sprockets, keys, studs, and induction hardened machinery components. EN 5 Steel is a 0.30% medium carbon unalloyed engineering steel specified under British Standards (BS 970) for applications requiring higher tensile strength, wear resistance, and yield strength than standard low-carbon grades. Formulated with 0.25–0.35% Carbon, 0.60–0.90% Manganese, and 0.10–0.35% Silicon, EN 5 delivers excellent machinability (approx 70–80% rating) in normalized or cold drawn supply condition (+C). Cold drawing enhances bar straightness, tightens dimensional tolerances, and elevates yield strength (350–480 MPa). EN 5 also responds exceptionally well to induction or flame hardening, developing a wear-resistant surface case (50–55 HRC) while maintaining a resilient, shock-absorbing core. Because of its reliable mechanical properties and moderate cost, EN 5 Steel is widely specified across automotive drive shafts, machine tool spindles, agricultural axles, gear blanks, and general engineering spares.
Our EN 5 Free Cutting Steels are 100% Prime – Tested & Guaranteed, ensuring precise chemical composition, dimensional accuracy, and consistent mechanical strength. Each product is supplied with proper Mill Test Certificates (MTC) confirming compliance with BS 970 / EN 10277 standards with EN 10204 3.1 certification. STEEL MART follows strict quality control procedures and ensures timely delivery.
What is EN 5 Free Cutting Steel?
EN 5 Steel (BS 970 080M30 / EN5 / DIN C30 / W.Nr 1.0528 / AISI 1030 / SAE 1030) is a medium carbon unalloyed engineering steel specified under British Standards (BS 970) for medium-stress mechanical components requiring good machinability, higher tensile strength, and surface hardenability. Formulated with 0.25–0.35% Carbon, 0.60–0.90% Manganese, and 0.10–0.35% Silicon, EN 5 achieves superior mechanical strength and fatigue resistance compared to low-carbon steels. In cold drawn supply condition (+C), EN 5 delivers precise dimensional tolerances, high bar straightness, and elevated yield strength (350–480 MPa). It responds exceptionally well to induction or flame hardening, achieving surface hardness of 50–55 HRC for wear-resistant applications over a tough core. It is widely specified for medium-duty turned shafts, gear blanks, drive axles, sprockets, keys, studs, lever arms, and general machine tool spares.
80% Machinability
Clean turning, milling, & gear cutting performance on CNC equipment.
50–55 HRC Surface
Responds to induction & flame hardening for localized wear resistance.
500–650 MPa Tensile
Higher mechanical strength than low-carbon steels for medium load applications.
High Bar Straightness
Cold drawn (+C) supply condition provides smooth bright finish & tight bar tolerances.
Good Hot Forgeability
Responds well to hot forging & drop stamping for custom component blanks.
Drive Axles & Shafts
Universal grade for medium-duty turned shafts, gear blanks, sprockets, & studs.
Why Choose STEEL MART for EN 5 Free Cutting Steel
STEEL MART is the preferred choice for purchasing EN 5 Free Cutting Steel due to its strong reputation for quality and reliability. With over 40 years of experience in the steel industry, the company ensures that every product meets strict industry standards. The company follows strict quality inspection procedures to ensure that every EN 5 Steel product meets international standards.
Each product is carefully tested to ensure durability, strength, and performance. Customers trust STEEL MART for consistent quality, competitive pricing, and timely delivery. The company maintains a large inventory to meet urgent and bulk requirements efficiently. In addition to EN 5 Steels, STEEL MART also supplies a wide range of free-cutting, alloy steel, and carbon steel products for various industrial applications.
Chemical Composition of EN 5 Free Cutting Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.25 – 0.35 % |
| Manganese (Mn) | 0.60 – 0.90 % |
| Silicon (Si) | 0.10 – 0.35 % |
| Sulphur (S) | 0.050 % Max |
| Phosphorus (P) | 0.040 % Max |
Medium Carbon (0.25-0.35%) delivers higher tensile strength and induction hardening response.
Equivalent Grades of EN 5 Free Cutting Steel
| Standard | Equivalent Grade |
|---|---|
| BS 970 | 080M30 / 080A30 / EN5 |
| DIN / EN | C30 / 1.0528 / C30E |
| AISI / SAE | AISI 1030 / SAE 1030 |
| JIS | S30C |
| ISO | C30 |
These international equivalents ensure global engineering specification compatibility.
Mechanical Properties of EN 5 Free Cutting Steel (Cold Drawn)
The mechanical properties of EN 5 Free Cutting Steels make them ideal for turned shafts, gear blanks, sprockets, keys, studs, and axles. In cold drawn condition (+C), EN 5 delivers high tensile strength and uniform hardness.
Manufacturing & Processing of EN 5 Free Cutting Steel
EN 5 Free Cutting Steel bars undergo hot rolling, descaling, precision cold drawing (+C), and optional induction hardening to form high-strength engineering components.
Hot Rolling (1050°C - 1150°C)
Primary hot rolling into round, hex, and square bar profiles with controlled structure cooling.
Normalization (870°C - 910°C)
Air cooling to refine grain structure and optimize machinability prior to finish machining.
Precision Cold Drawing (+C)
Drawn through carbide dies to elevate yield strength and establish h9 / h10 bar tolerances.
Induction Hardening & Tempering
Localized induction hardening (840°C-870°C) and tempering to achieve 50–55 HRC surface case.
EN 5 Industry Applications
EN 5 Free Cutting Steels are widely used across Medium-Duty Turned Shafts, Gear Blanks, Sprockets, Drive Axles, Studs, and Induction Hardened Components.
Medium-Duty Turned Shafts
Machine tool drive shafts, pump spindles, motor rotors, & electric generator shafts.
Gear Blanks & Sprockets
Turned gear blanks, chain drive sprockets, splined hubs, & transmission keys.
Automotive Axles & Studs
Light vehicle drive axles, steering studs, wheel studs, & suspension linkage rods.
Induction Hardened Pinions & Rollers
Induction hardened wear pins, guide rollers, conveyor pins, & indexing shafts.
General Machinery Components
Levers, connecting rods, machine slides, hydraulic cylinder end caps, & studs.
Agricultural Equipment Parts
Tractor PTO shafts, tiller pins, combine harvester shafts, & agricultural implement spares.
Availability and Customization
At STEEL MART, we supply EN 5 Free Cutting Steels in a wide range of sizes and specifications.
| Profiles Available | Round Bars, Hexagon Bars, Square Bars, & Flat Bars |
| Diameter / Size | Round: 5 mm to 250 mm | Hex: 6 mm to 75 mm AF | Square: 6 mm to 100 mm |
| Condition | Supplied in Cold Drawn (+C), Normalized, or Turned condition |
| Length | Standard lengths from 3 meters to 6 meters |
| Tolerances | h9, h10, or h11 precision drawn tolerance per ISO / DIN 175 |
| Customization | Band-saw cut-to-length and chamfered bar ends available upon request |
| Certification | Supplied with 100% Prime Mill Test Certificate (EN 10204 3.1) |
Our strict quality control ensures consistent chemical composition and machining performance.
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EN 5 Free Cutting Steel (BS 970 080M30 / EN5 / DIN C30 / W.Nr 1.0528 / AISI 1030 / SAE 1030) is a premier medium carbon unalloyed engineering steel widely specified across turned shafts, gear blanks, sprockets, drive axles, studs, and induction hardened machinery components. Combining 0.30% carbon for higher tensile strength (500–650 MPa), 80% machinability rating, excellent induction hardening response (50–55 HRC), and high bar straightness in cold drawn condition (+C), it delivers superior strength and wear resistance for medium-stress mechanical components. Supplied by STEEL MART with strict quality inspection and full EN 10204 3.1 Mill Test Certification, EN 5 Steel is a benchmark medium carbon engineering grade.
Frequently Asked Questions
Common answers regarding EN 5 Free Cutting Steel specifications and parameters.
EN 5 contains 0.25–0.35% Carbon, 0.60–0.90% Manganese, 0.10–0.35% Silicon, max 0.050% Sulphur, and max 0.040% Phosphorus.
EN 5 has higher carbon content (0.30% vs 0.20% in EN 3B), providing higher tensile strength (500–650 MPa) and superior surface hardness response to induction or flame hardening.
EN 5 (BS 970 080M30) is equivalent to German DIN C30 (W.Nr 1.0528) and American AISI 1030 / SAE 1030, offering matching chemical composition and mechanical properties.
Medium-duty turned shafts, drive axles, gear blanks, sprockets, keys, studs, induction hardened wear pins, and agricultural machinery components.
STEEL MART supplies EN 5 in round bars, hexagon bars, square bars, and flat bars in Cold Drawn (+C), Normalized, or Turned condition with EN 10204 3.1 mill test certificates.